Brain-Derived Extracellular Vesicle Subpopulations: from Bulk Measurements to Single-Entity Assays.

Collectively, these examples illustrate a clear trend toward integrated single-EV platforms that combine physical partitioning or spatial confinement, signal amplification (enzymatic turnover, RCA, PCR/qRT-PCR), and multichannel fluorescence imaging with computational analysis. , Such single-entity techniques are particularly attractive when disease signals are carried by rare EV subsets or when coexpression patterns and multianalyte signatures are diagnostically informativeconditions under which bulk averaging can be intrinsically limiting. 5.4.

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